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Automotive micro-controllers

With up to eight CAN FD ports

STMicroelectronics (ST) has shipped more than 150 million parts of its SPC5 micro-controller family. The chips are mainly used in automotive applications.

The 32-bit MCU family has about 200 members and more are to come (Photo: STMicroelectronics)

The SPC58 “Chorus” products are the latest in the line enhancing the scalability, connectivity, and security of the family. They target a number of automotive applications including standalone, integrated, and smart gateways, firmware updates over-the-air, electric-vehicle battery management, access control, lighting and body control units, domain controllers, and advanced park maneuver assistance.

Premium vehicles today typically have around 130 electronic control units (ECUs). These are networked to control about 150 motors and actuators. Therefore the MCUs provide different network options including ISO CAN FD. Some family members feature up to eight independent CAN FD interfaces. In designing the products, the chipmaker defined the key features to ensure an MCU range with scalable performance as well as a host of memory and packaging options. Performance up to 200 MHz with single, double, and triple core options, is complemented by memory sizes that will provide up to 10 MiB of flash and 1,3 MiB of RAM. Packaging options for the SPC58 range from QFN48 to BGA384. Designed in a low-power technology, the MCUs are suitable for control units connected directly to the battery.

As networking and the number of ECUs increase, so do the amount and complexity of software. So too, does the need to update the software to resolve performance or security issues or add new features. All SPC58 products have been designed to obtain ISO-26262 safety level Asil-B with the high-end products reaching the level Asil-D. As with all MCUs, the SPC58 Chorus benefits from a comprehensive development ecosystem that includes an integrated development environment (IDE) with graphic wizards for complex pin-out design, and power consumption simulation, starter kits, and evaluation and premium boards plus a complete software portfolio with Autosar, Evita, and HIS support. The first products in the “Chorus” range are already in volume production, with the latest members being sampled and tested in the field. The “Chorus” MCUs currently includes the B-line, C-line, G-line, and the high-performance H-line available soon.